20666896

素因数分解:

$2^4\times {\mathrm{149}}^1\times {\mathrm{8669}}^1$

素因数の和:8826

約数の個数: 20

約数和(自身を含む): 40315500

約数和(自身を除く): 19648604

約数列:

[1, 2, 4, 8, 16, 149, 298, 596, 1192, 2384, 8669, 17338, 34676, 69352, 138704, 1291681, 2583362, 5166724, 10333448, 20666896]

約数ペア:

[(1, 20666896), (2, 10333448), (4, 5166724), (8, 2583362), (16, 1291681), (149, 138704), (298, 69352), (596, 34676), (1192, 17338), (2384, 8669)]